Electric embossing apparatus.



E. N. CHANDLER. ELECTRIC EMBOSSING APPARATUS.

APPLICATION FILED JUNE13| I910.

W 7% W Wm A. a UM M n: fi mm .MQ M A .W K ,n i H 23 %TATE% PATENT @FFIQE EDWIN 1\T. CHANDLER, OF BRAINTREE, MASSACHUSETTS, ASSIGNOR T0 SIMPLEX ELECTRIC-HEATING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

Specification of Letters Patent.

Patented June 1, 1915.

Application filed June 13, 1910. Serial No. 566,493.

To all whom it may concern:

Be it known that I, EDWIN N. CHANDLER, a citizen of the United States, residing at Braintree, in the county of Norfolk and State of. Massachusetts, have invented an Improvement in Electric Embossing Apparatus, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

My invention is an embossing tool or machine, primarily intended for use in connection with the manufacture of shoes, whereby the shoe parts may be quickly and accurately embossed by means of an electrically heated die.

The constructional details, manner of use, and advantages of'my invention will be set forth in the following description, taken with reference to the accompanying drawings, in which I have shown a preferred embodiment of the invention.

In the drawings, Figure 1 is a front view of the machine, partly broken out for clearness of illustration; and Fig. 2 shows the same in side elevation.

The main frame of the machine comprises a forwardly extending bed 1 and an upright column 2, the work support being carried by the former and the die and operating mechanism by the latter. In the upper end of the column 2 is mounted a driving shaft 3 provided with a driving pulley 4, a treadle operated clutch 5 (which being of any usual construction, need not be further explained in its details), and at its forward end with an eccentric pin 6 connected by a link 7 to a sliding plunger 8 for reciprocating the die head 9. The latter is clamped to a reduced end 10 of the plunger or slide 8 by clamping screws 11 and is somewhat dish-shaped on its upper side as best shown in Fig. 1, for receiving the resistance heating wires 12 which are provided at the top surface of the die head, embedded in vitreous enamel 13, the terminals of said resist- ,ance wire leading to binding posts 14 at the rear of the head to which may be secured suitable conductors 15, 16. At its under side the die head 9 carries a die-supporting frame 17 slidingly-mounted in side guides 18 clamped to the die head by securing means .19. The die 20 is removably mounted in this frame 17 by bolts 21.. In

this manner the die and its frame are held in direct intimate heating contact with the hot die head or block which is directly heated by the electric current through the resistance wires 12. Below the die is the work support. Projecting upwardly from the bed 1 is a standard 22 in which operates the depending threaded portion 23 of a nut 24 which serves to raise and lower the stem 25 of a supporting plate 26. Mounted to slide longitudinally on this supporting plate is a work support or slide table 27, herein shown as having dove-tail connection with the supporting plate or guide member at 28 for accuracy of movement. The supporting plate 26 is held from turning by a depending finger 29 extending through a lug 30, and the table 27 is limited in its outward movement by a depending finger 31 in the path of a screw or stud 32 and is operated by a handle in the form of a screw 33 threaded into an car 34. at the front end of said table. The screw serves to limit the in ward movement of the table 27 by striking against the supporting plate 26. a check nut 35 serving to hold the screw'33 in desired adjustment.

In use, the operator carefully adjusts the height of the table 27 in accordance with the character of the work required and adjusts the screw 33 so as to limit the inward movement of the table in accordance with the position of the die. He then pulls outwardly on the table 27 and places the work carefully on the table, whereupon the table is shoved back into place and the die is brought down into engagement with the work in response to the driving machinery when brought into action by the'trea dle. If a different die is required, the die holder 17 is pulled forward, the die therein, removed and another put into place, whereupon the die holder is shoved back into its original position with relation to the die head. Uniform heat is transmitted to the die by the die head .from the resistance wires 12. If desired, an

The clamps 18 so as to give the operator a clearer view of the work and'make the operation and adjustment of the various parts more accessible and convenient. My machine provides extremely accurate and convenient adjustments for accommodating various thicknesses and kinds of work, and at the same time it is simple and comparatively inexpensive. v I

It will be understood that various changes may be resorted to without departing from the spirit and scope-of my invention as defined in the appended claims.

Having described my invention, what I claim as new and desire to secure by Letters Patent is,

An embossing machine, having-a main frame, a vertically sliding die carrier ar-r ranged to reclprocate 1n said frame, a die head secured to the lower end of the carrier and having a deep horizontally disposed openrecess' in itsupper portion, an electric heating device of less thickness than the depth of said recess arranged in the recess, conductors for the heating device extending through the rear wall of the die head, and a die removably held'in the lower most portion of the die head and in heat receiving relation to the heating means and parallel therewith.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDWIN N. CHANDLER.

Witnesses M. J. 'SPALDING, EDWARD MAXWELL 

